Newer
Older
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
assert(p.init_tag == 101)
assert(p.a_rwnd == 102)
assert(p.n_out_streams == 103)
assert(p.n_in_streams == 104)
assert(p.init_tsn == 105)
assert(len(p.params) == 7)
params = {type(param): param for param in p.params}
assert(set(params.keys()) == {SCTPChunkParamECNCapable, SCTPChunkParamFwdTSN,
SCTPChunkParamSupportedExtensions, SCTPChunkParamChunkList,
SCTPChunkParamRandom, SCTPChunkParamRequestedHMACFunctions,
SCTPChunkParamSupportedAddrTypes})
assert(params[SCTPChunkParamECNCapable] == SCTPChunkParamECNCapable())
assert(params[SCTPChunkParamFwdTSN] == SCTPChunkParamFwdTSN())
assert(params[SCTPChunkParamSupportedExtensions] == SCTPChunkParamSupportedExtensions(len=7))
assert(params[SCTPChunkParamChunkList] == SCTPChunkParamChunkList(len=4))
assert(params[SCTPChunkParamRandom].len == 4+32)
assert(len(params[SCTPChunkParamRandom].random) == 32)
assert(params[SCTPChunkParamRequestedHMACFunctions] == SCTPChunkParamRequestedHMACFunctions(len=6))
assert(params[SCTPChunkParamSupportedAddrTypes] == SCTPChunkParamSupportedAddrTypes(len=6))
= basic SCTPChunkInitAck - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x14\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkInitAck))
assert(p.flags == 0)
assert(p.len == 20)
assert(p.init_tag == 0)
assert(p.a_rwnd == 0)
assert(p.n_out_streams == 0)
assert(p.n_in_streams == 0)
assert(p.init_tsn == 0)
assert(p.params == [])
= SCTPChunkInitAck with state cookie - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x4C\x00\x00\x00\x65\x00\x00\x00\x66\x00\x67\x00\x68\x00\x00\x00\x69\x80\x00\x00\x04\x00\x0B\x00\x0D\x6C\x6F\x63\x61\x6C\x68\x6F\x73\x74\x00\x00\x00\xC0\x00\x00\x04\x80\x08\x00\x07\x0F\xC1\x80\x00\x00\x07\x00\x14\x00\x10\x9E\xB2\x86\xCE\xE1\x7D\x0F\x6A\xAD\xFD\xB3\x5D\xBC\x00"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkInitAck))
assert(p.flags == 0)
assert(p.len == 76)
assert(p.init_tag == 101)
assert(p.a_rwnd == 102)
assert(p.n_out_streams == 103)
assert(p.n_in_streams == 104)
assert(p.init_tsn == 105)
assert(len(p.params) == 5)
params = {type(param): param for param in p.params}
assert(set(params.keys()) == {SCTPChunkParamECNCapable, SCTPChunkParamHostname,
SCTPChunkParamFwdTSN, SCTPChunkParamSupportedExtensions,
SCTPChunkParamStateCookie})
assert(params[SCTPChunkParamECNCapable] == SCTPChunkParamECNCapable())
assert(params[SCTPChunkParamHostname] == SCTPChunkParamHostname(len=13, hostname="localhost"))
assert(params[SCTPChunkParamFwdTSN] == SCTPChunkParamFwdTSN())
assert(params[SCTPChunkParamSupportedExtensions] == SCTPChunkParamSupportedExtensions(len=7))
assert(params[SCTPChunkParamStateCookie].len == 4+16)
assert(len(params[SCTPChunkParamStateCookie].cookie) == 16)
= basic SCTPChunkSACK - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkSACK))
assert(p.flags == 0)
assert(p.len == 16)
assert(p.cumul_tsn_ack == 0)
assert(p.a_rwnd == 0)
assert(p.n_gap_ack == 0)
assert(p.n_dup_tsn == 0)
assert(p.gap_ack_list == [])
assert(p.dup_tsn_list == [])
= basic SCTPChunkHeartbeatReq - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x04"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkHeartbeatReq))
assert(p.flags == 0)
assert(p.len == 4)
assert(p.params == [])
= basic SCTPChunkHeartbeatAck - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x04"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkHeartbeatAck))
assert(p.flags == 0)
assert(p.len == 4)
assert(p.params == [])
= basic SCTPChunkAbort - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x04"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkAbort))
assert(p.reserved == 0)
assert(p.TCB == 0)
assert(p.len == 4)
assert(p.error_causes == "")
= basic SCTPChunkShutDown - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x08\x00\x00\x00\x00"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkShutdown))
assert(p.flags == 0)
assert(p.len == 8)
assert(p.cumul_tsn_ack == 0)
= basic SCTPChunkShutDownAck - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x04"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkShutdownAck))
assert(p.flags == 0)
assert(p.len == 4)
= basic SCTPChunkError - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x09\x00\x00\x04"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkError))
assert(p.flags == 0)
assert(p.len == 4)
assert(p.error_causes == "")
= basic SCTPChunkCookieEcho - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0A\x00\x00\x04"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkCookieEcho))
assert(p.flags == 0)
assert(p.len == 4)
assert(p.cookie == "")
= basic SCTPChunkCookieAck - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0B\x00\x00\x04"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkCookieAck))
assert(p.flags == 0)
assert(p.len == 4)
= basic SCTPChunkShutdownComplete - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0E\x00\x00\x04"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkShutdownComplete))
assert(p.reserved == 0)
assert(p.TCB == 0)
assert(p.len == 4)
= basic SCTPChunkAuthentication - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x08\x00\x00\x00\x00"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkAuthentication))
assert(p.flags == 0)
assert(p.len == 8)
assert(p.shared_key_id == 0)
assert(p.HMAC_function == 0)
= basic SCTPChunkAddressConf - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc1\x00\x00\x08\x00\x00\x00\x00"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkAddressConf))
assert(p.flags == 0)
assert(p.len == 8)
assert(p.seq == 0)
assert(p.params == [])
= basic SCTPChunkAddressConfAck - Dissection
~ sctp
blob = b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x00\x08\x00\x00\x00\x00"
p = SCTP(blob).lastlayer()
assert(isinstance(p, SCTPChunkAddressConfAck))
assert(p.flags == 0)
assert(p.len == 8)
assert(p.seq == 0)
assert(p.params == [])
= SCTPChunkParamRandom - Consecutive calls
~ sctp
param1, param2 = SCTPChunkParamRandom(), SCTPChunkParamRandom()
assert(param1.random != param2.random)
############
############
+ DHCP
= BOOTP - misc
BOOTP().answers(BOOTP()) == True
BOOTP().hashret() == b"\x00\x00\x00\x00"
import random
random.seed(0x2807)
str(RandDHCPOptions()) == "[('WWW_server', '90.219.239.175')]"
value = ("hostname", "scapy")
dof = DHCPOptionsField("options", value)
dof.i2repr("", value) == '[hostname scapy]'
unknown_value_end = b"\xfe" + b"\xff"*257
udof = DHCPOptionsField("options", unknown_value_end)
udof.m2i("", unknown_value_end) == [(254, '\xff'*255), 'end']
unknown_value_pad = b"\xfe" + b"\xff"*256 + b"\x00"
udof = DHCPOptionsField("options", unknown_value_pad)
udof.m2i("", unknown_value_pad) == [(254, '\xff'*255), 'pad']
= DHCP - build
s = str(IP()/UDP()/BOOTP(chaddr="00:01:02:03:04:05")/DHCP(options=[("message-type","discover"),"end"]))
s == b'E\x00\x01\x10\x00\x01\x00\x00@\x11{\xda\x7f\x00\x00\x01\x7f\x00\x00\x01\x00C\x00D\x00\xfcf\xea\x01\x01\x06\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0000:01:02:03:04:0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00c\x82Sc5\x01\x01\xff'
= DHCP - dissection
p = IP(s)
DHCP in p and p[DHCP].options[0] == ('message-type', 1)
############
############
+ 802.11
= 802.11 - misc
PrismHeader().answers(PrismHeader()) == True
dpl = Dot11PacketList([Dot11()/LLC()/SNAP()/IP()/UDP()])
len(dpl) == 1
dpl_ether = dpl.toEthernet()
len(dpl_ether) == 1 and Ether in dpl_ether[0]
= Dot11 - build
s = str(Dot11())
s == b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
= Dot11 - dissection
p = Dot11(s)
Dot11 in p and p.addr3 == "00:00:00:00:00:00"
p.mysummary() == '802.11 Management 0L 00:00:00:00:00:00 > 00:00:00:00:00:00'
= Dot11QoS - build
s = str(Dot11(type=2, subtype=8)/Dot11QoS())
s == b'\x88\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
= Dot11QoS - dissection
p = Dot11(s)
Dot11QoS in p
= Dot11 - answers
query = Dot11(type=0, subtype=0)
Dot11(type=0, subtype=1).answers(query) == True
= Dot11 - misc
Dot11Elt(info="scapy").summary() == "SSID='scapy'"
############
############
+ 802.3
= Test detection
assert isinstance(Dot3(str(Ether())),Ether)
assert isinstance(Ether(str(Dot3())),Dot3)
a = Ether(b'\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00')
assert isinstance(a,Dot3)
assert a.dst == 'ff:ff:ff:ff:ff:ff'
assert a.src == '00:00:00:00:00:00'
a = Dot3(b'\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x90\x00')
assert isinstance(a,Ether)
assert a.dst == 'ff:ff:ff:ff:ff:ff'
assert a.src == '00:00:00:00:00:00'
############
############
+ ASN.1
= MIB
import tempfile
fd, fname = tempfile.mkstemp()
os.write(fd, "-- MIB test\nscapy OBJECT IDENTIFIER ::= {test 2807}\n")
os.close(fd)
load_mib(fname)
assert(len([k for k in conf.mib.iterkeys() if "scapy" in k]) == 1)
assert(len([oid for oid in conf.mib]) > 100)
assert(conf.mib._my_find("MIB", "keyUsage"))
assert(len(conf.mib._find("MIB", "keyUsage")))
assert(len(conf.mib._recurs_find_all((), "MIB", "keyUsage")))
b = BERcodec_IPADDRESS()
r1 = b.enc("8.8.8.8")
r2 = b.dec(r1)[0]
r2.val == '8.8.8.8'
############
############
+ inet.py
= IPv4 - ICMPTimeStampField
test = ICMPTimeStampField("test", None)
value = test.any2i("", "07:28:28.07")
value == 26908070
test.i2repr("", value) == '7:28:28.70'
= IPv4 - UDP null checksum
IP(str(IP()/UDP()/Raw(b"\xff\xff\x01\x6a")))[UDP].chksum == 0xFFFF
= IPv4 - (IP|UDP|TCP|ICMP)Error
query = IP(dst="192.168.0.1", src="192.168.0.254", ttl=1)/UDP()/DNS()
answer = IP(dst="192.168.0.254", src="192.168.0.2", ttl=1)/ICMP()/IPerror(dst="192.168.0.1", src="192.168.0.254", ttl=0)/UDPerror()/DNS()
query = IP(dst="192.168.0.1", src="192.168.0.254", ttl=1)/UDP()/DNS()
answer = IP(dst="192.168.0.254", src="192.168.0.2")/ICMP(type=11)/IPerror(dst="192.168.0.1", src="192.168.0.254", ttl=0)/UDPerror()/DNS()
assert(answer.answers(query) == True)
query = IP(dst="192.168.0.1", src="192.168.0.254", ttl=1)/TCP()
answer = IP(dst="192.168.0.254", src="192.168.0.2")/ICMP(type=11)/IPerror(dst="192.168.0.1", src="192.168.0.254", ttl=0)/TCPerror()
assert(answer.answers(query) == True)
query = IP(dst="192.168.0.1", src="192.168.0.254", ttl=1)/ICMP()/"scapy"
answer = IP(dst="192.168.0.254", src="192.168.0.2")/ICMP(type=11)/IPerror(dst="192.168.0.1", src="192.168.0.254", ttl=0)/ICMPerror()/"scapy"
assert(answer.answers(query) == True)
= IPv4 - mDNS
a = IP(dst="224.0.0.251")
assert a.hashret() == b"\x00"
# TODO add real case here
= IPv4 - utilities
l = overlap_frag(IP(dst="1.2.3.4")/ICMP()/("AB"*8), ICMP()/("CD"*8))
assert(len(l) == 6)
assert([len(str(p[IP].payload)) for p in l] == [8, 8, 8, 8, 8, 8])
assert([(p.frag, p.flags.MF) for p in [IP(str(p)) for p in l]] == [(0, True), (1, True), (2, True), (0, True), (1, True), (2, False)])
= IPv4 - traceroute utilities
ip_ttl = [("192.168.0.%d" % i, i) for i in xrange(1, 10)]
tr_packets = [ (IP(dst="192.168.0.1", src="192.168.0.254", ttl=ttl)/TCP(options=[("Timestamp", "00:00:%.2d.00" % ttl)])/"scapy",
IP(dst="192.168.0.254", src=ip)/ICMP(type=11)/IPerror(dst="192.168.0.1", src="192.168.0.254", ttl=0)/TCPerror()/"scapy")
for (ip, ttl) in ip_ttl ]
tr = TracerouteResult(tr_packets)
assert(tr.get_trace() == {'192.168.0.1': {1: ('192.168.0.1', False), 2: ('192.168.0.2', False), 3: ('192.168.0.3', False), 4: ('192.168.0.4', False), 5: ('192.168.0.5', False), 6: ('192.168.0.6', False), 7: ('192.168.0.7', False), 8: ('192.168.0.8', False), 9: ('192.168.0.9', False)}})
result_show = ""
def test_show():
def write(s):
global result_show
result_show += s
mock_stdout = mock.Mock()
mock_stdout.write = write
sys.stdout = mock_stdout
tr = TracerouteResult(tr_packets)
tr.show()
expected = " 192.168.0.1:tcp80 \n"
expected += "1 192.168.0.1 11 \n"
expected += "2 192.168.0.2 11 \n"
expected += "3 192.168.0.3 11 \n"
expected += "4 192.168.0.4 11 \n"
expected += "5 192.168.0.5 11 \n"
expected += "6 192.168.0.6 11 \n"
expected += "7 192.168.0.7 11 \n"
expected += "8 192.168.0.8 11 \n"
expected += "9 192.168.0.9 11 \n"
index_result = result_show.index("1")
index_expected = expected.index("1")
assert(result_show[index_result:] == expected[index_expected:])
test_show()
import mock
result_summary = ""
def test_summary():
def write_summary(s):
global result_summary
result_summary += s
mock_stdout = mock.Mock()
mock_stdout.write = write_summary
bck_stdout = sys.stdout
sys.stdout = mock_stdout
tr = TracerouteResult(tr_packets)
tr.summary()
sys.stdout = bck_stdout
assert(len(result_summary.split('\n')) == 10)
assert("IP / TCP 192.168.0.254:ftp_data > 192.168.0.1:http S / Raw ==> IP / ICMP 192.168.0.9 > 192.168.0.254 time-exceeded ttl-zero-during-transit / IPerror / TCPerror / Raw" in result_summary)
test_summary()
@mock.patch("scapy.layers.inet.plt")
def test_timeskew_graph(mock_plt):
def fake_plot(data, **kwargs):
return data
mock_plt.plot = fake_plot
srl = SndRcvList([(a, a) for a in [IP(str(p[0])) for p in tr_packets]])
ret = srl.timeskew_graph("192.168.0.254")
assert(len(ret) == 9)
assert(ret[0][1] == 0.0)
test_timeskew_graph()
tr = TracerouteResult(tr_packets)
saved_AS_resolver = conf.AS_resolver
conf.AS_resolver = None
tr.make_graph()
assert(len(tr.graphdef) == 491)
tr.graphdef.startswith("digraph trace {") == True
assert(('"192.168.0.9" ->' in tr.graphdef) == True)
conf.AS_resolver = conf.AS_resolver
pl = PacketList(list([Ether()/x for x in itertools.chain(*tr_packets)]))
srl, ul = pl.sr()
assert(len(srl) == 9 and len(ul) == 0)
conf_color_theme = conf.color_theme
conf.color_theme = BlackAndWhite()
assert(len(pl.sessions().keys()) == 10)
conf.color_theme = conf_color_theme
new_pl = pl.replace(IP.src, "192.168.0.254", "192.168.0.42")
assert("192.168.0.254" not in [p[IP].src for p in new_pl])
@mock.patch("scapy.layers.inet.sr")
def test_report_ports(mock_sr):
def sr(*args, **kargs):
return [(IP()/TCP(dport=65081, flags="S"), IP()/TCP(sport=65081, flags="SA")),
(IP()/TCP(dport=65082, flags="S"), IP()/ICMP(type=3, code=1)),
(IP()/TCP(dport=65083, flags="S"), IP()/TCP(sport=65083, flags="R"))], [IP()/TCP(dport=65084, flags="S")]
report = "\\begin{tabular}{|r|l|l|}\n\hline\n65081 & open & SA \\\\\n\hline\n?? & closed & ICMP type dest-unreach/host-unreachable from 127.0.0.1 \\\\\n65083 & closed & TCP R \\\\\n\hline\n65084 & ? & unanswered \\\\\n\hline\n\end{tabular}\n"
assert(report_ports("www.secdev.org", [65081,65082,65083,65084]) == report)
result_IPID_count = ""
def test_IPID_count():
def write(s):
global result_IPID_count
result_IPID_count += s
mock_stdout = mock.Mock()
mock_stdout.write = write
sys.stdout = mock_stdout
random.seed(0x2807)
IPID_count([(IP()/UDP(), IP(id=random.randint(0, 65535))/UDP()) for i in range(3)])
lines = result_IPID_count.split("\n")
assert(len(lines) == 5)
assert(lines[0].endswith("Probably 3 classes: [4613, 53881, 58437]"))
############
############
+ Fields
= FieldLenField with BitField
class Test(Packet):
name = "Test"
fields_desc = [
FieldLenField("BitCount", None, fmt="H", count_of="Values"),
FieldLenField("ByteCount", None, fmt="B", length_of="Values"),
FieldListField("Values", [], BitField("data", 0x0, size=1),
count_from=lambda pkt: pkt.BitCount),
]
pkt = Test(str(Test(Values=[0, 0, 0, 0, 1, 1, 1, 1])))
assert(pkt.BitCount == 8)
assert(pkt.ByteCount == 1)